Three-wing panicfroof revolving door



March 13, 1934. 1 w LlGHT 1,950,681

THREE-WING PANICPROOF REVOLVING DOOR Filed Nov. 5, 1931 2 Sheets-Sheet lgi? il Il l'lfl INVENTOR.

March 13, 1934. J. w. LIGHT THREE-WING PANIcPRooF REvoLvING Doon FiledNov. 5, 1931 2 Sheets-Sheet 2 l l 07 Midi. mm .ww/ m #MMM 4 ,www3/4%.@771 l Z ZM., Z t l 3 h# Il lumwuwi- 5 INI/ENTOR. wwwa@ BY A T TORNE Y.

Patented Mar. 13, 1934 OFFICE THREE-WING PANICPRF REVOLVING John W.Light, Independence, Kans.

Application November 5,

3 Claims.

This invention relates to revolving doors and has for its general objectto produce a panic proof three wing door of strong, durable, eiilcientand comparatively inexpensive construction, panic proof as used in thisconnection meaning a door which will collapse should two or more personsattempt to operate the door in opposite directions.

A still further object of the invention is to produce a three wing doorwhich may be collapsed and swung to one side of the door opening ifdesired.

Another object is to produce a revolving door which is supported at itsbottom and therefore does not require a complicated and expensiveoverhead support as usually required with revolving doors of ordinaryconstruction.

A further object or" the invention is to produce a door of the characteroutlined which when locked in closed position for the night will permitaccess to the interior of the store by the proprietor or otherauthorized person, through the folding of one of the wings withoutrotation of the door or manipulation of any of the other wings of thedoor.

A still further object is to produce improved center trunnion supportsand a better and cheaper top and bottom locking bolt for securing thedoor at night.

With the general objects named in view and others as will hereinafterappear, the invention consists in certain novel and useful features ofconstruction and organization of parts as hereinafter described andclaimed; and in order that it may be fully understood, reference is tobe had to the accompanying drawings, in whicht- Figure 1 is a top planView of a revolving door embodying the invention, showing the door inoperative position in full lines and in collapsed position in dottedlines.

Figure 2 is a View on the line II-II of Figure 1.

Figure 3 is a View on the line III-III of Figure 1.

Figure 4 is an enlarged section IV-IV of Figure 2.

Figure 5 is an enlarged section V--V of Figure 1.

Figure 6 is an enlarged section VI-VI of Figure 5.

Figure 7 is an enlarged section VII-VII of Figure 5.

Figure 8 is an enlarged perspective view of the locking bolt mechanismembodying the invention.

In the said drawings, where like reference characters identifycorresponding parts in all of the on the line on the line on the line onthe line 1931, Serial No. 573,128

(Cl. 2li- 18) figures, 1 represents a center post or standard which isillustrated as of hexagonal shape, and symmetrically arranged aroundsaid post adjacent its top and bottom are three pairs of upper and lowerhinge members 2 having rounded ends 3. The hinge members are receivedwithin slots in the edges of the wings e, and said wings are pivotallysecured thereto by pivot pins 5 carried by metal housings 6 secured inany suitable manner to the edges of the wings. The rear edges of each ofthe wings is rounded as at 7, and all of the edges of the wings areequipped with the customary flexible Weather strips 8 for rubbingcontact with the door frame 9 as common with revolving doors. With thehinge construction described, it is evident that each wing of the door,unless restrained, is free to pivot or hinge in either direction.

1n order to prevent the free swinging of the wings ci the door and tosupply suicient resistance to insure rotation of the entire door uponthe application of pressure against any one of the wings, each wing isformed with a recess receiving a housing 10 in which a guide 11 isformed, and reciprocating in said guide 11 is a stem or rod 12 normallyheld in fixed position by means of a spring 13 interposed between theguide and a nut 14 threaded on the end of the rod (see Figure 4). Eachhousing 10 is formed with a slot or opening or corresponding sides ofeach wing through which the end of a rock lever 15 projects, said leverbeing pivoted at an intermediate point between a pair of ears 16 formedon the casing 10 within the wing recess, the other end of said leverbeing pivoted to the end of the rod 12. On the opposite side of eachwing an eye or loop 17 is secured, and extending from said eye to eachlever 15 of each door, is a flexible link or chain 18. Under ordinaryconditions of operation the tension of the spring 13 is greater thanthat required to rotate the door around its bearings hereinafterdescribed, but should two or more persons push in opposite directionsagainst two or more wings of the door, the resistance of the springs 13is overcome and the corresponding lever 15 moves to the dotted lineposition shown in Figure 4 and permits the chain or link 18 to becomedisconnected from its lever 15, thus freeing the two wings of the doorso that they may swing on their hinges as shown at A and B in dottedlines Figure 4, against opposite sides of the other wing. Thisconstruction is supplied to take care of panics such as occur in case ofa fire, an explosion, or the like.

The upper end of the post or standard 1 is 1h10 lll held centered withrespect to the door frame 9 by means of a retractile trunnion 19 engagedwithin a socket 20 secured to the top of the door frame 9, said pinextending through a guide 21 in the top of the center post and beingconnected within the center post to the end oi a rod 22 extendingthrough a passageway 23 in the post and being provided with a fork oryoke 24 at its lower end. Received and pivoted within the yoke on a pin25 is one end of an operating lever 26, which is pivoted at anintermediate point on a pin 27 carried by a pair of flanges 28 of acover plate or housing 29 screwed or otherwise suitably secured to thevertical face of the post 1. Referring to Figure 5, it will be evidentthat by throwing the lever 25 in the direction of the arrow, the centersof pivots 25 and 2.7 pass each other, and the trunnion 19 isconsequently withdrawn into the post 1 and out of engagement with thesocket 20 carried by the door frame.

The weight oi the door is carried at its lower end on a retractibletrunnion 30 mounted within a chamber 31 in the bottom of post i, andbeing adapted for engagement with a socket 32 in the floor of the doorframe 9, it being noted that the socket and trunnion are provided witheoacting ratchet teeth 33, to prevent rotation of the trunnion in thesocket, as it is intended that the door shall always rotate on ananti-friction bearing carried adjacent the upper end of the trunnion aswill hereinafter appear. The trunnion 39 adjacent its upper end isformed with a shoulder 34 for supporting an anti-friction bearing 35,said bearing being received and held Within the lower end of a cage orhousing 36 by engagement between the shoulder at its lower side, and across strap 37 of the cage, at its upper side, the trunnion 30 at itsupper end being reduced and held to the cage by a nut 38 threaded downagainst the strap 3'! as shown in Figure 5.

The upper end of the cage is adjustably secured by nuts 39 to the end ofa rod 4G, so that the projection of the trunnion 30 may be adjusted tosuit conditions of installation, and said rod 40 extends upwardlythrough a passageway in the post and at its upper end is provided with ayoke 4l within which one end of an operating lever 42 is pivoted on apin 43. The lever 42 is pivoted at an intermediate point on a pin 44carried by the flanges 43a of the cover plate 29 similarly to theconstruction described in connection with the upper trunnion. With thisconstruction, it will be evident that the entire weight of the door istransferred from. the plate 29 down through pin 44 and the end 45 of thelever 42 where it contacts with the bottom of the yoke 4l, through therod 40 to the cross strap 37 of the cage 36, and from said strap throughthe roller bearing 35 to the shoulder 34 of the trunnion 30.

i It will also be evident that by swinging the lever 42 in the directionof the lower arrow shown in Figure 5, the lower trunnion 30 of the doorwill be retracted within the post l for a purpose which will hereinafterappear.

In order to fold the door out of the entrance passageway, one or" thewings of the door is provided with top and bottom locking bolts 46 and47 respectively, to be received within correspending sockets in the doorframe 9, said bolts passing through guides 48 and 49 secured to the faceof the wing. The bolts extend in opposite directions along the edge ofthe wing and about midway the height of the wing they each terminate inround rings 50 within which are itted eccentrics 51 formed integrally bypreference on a shaft 52 (see Figure 8); one end of said shaft beingequipped with any suitable key-operated mechanism for the rotation ofthe shaft and consequent withdrawal of the locking bolts or theirprojection into their respective sockets in the door trarne. When it isdesired to fold the revolving door out of the entrance passage as shownin dotted lines Figure l, the door bolts 45 and 47 are engaged withtheir sockets, and the trunnions 19 and 30 of the center post areretracted, thus imposing the weight of the entire door on the bolts 46and 4'7, and freeing the door so that the chains 18 may be tripped andit can be folded to one side as illustrated. It is to be noted in thisconnection that the bolts 46 and 47 are also used in locking the door atnight or when a store or the like is closed, one of the other wings ofthe door being equipped with a locking bolt 53, either adapted only toengage a socket in the top ci the door frainc as illustrated, or adouble. bolt like 46-4'l, if desired. With two wings of the door thuslocked, it will be evident that an authorized person may unlock a doorwing, trip the retaining link or chain member i8, and thus gain accessto the store without unlocking the other wing or without revolving theentire door.

It is believed the construction and operation has been so set forth thatrecapitulation is unnecessary, and it is to be understood that while Ihave shown and described the preferred embodiment of the invention, IreserveY the right to rnake all changes within the spirit of theinvention and without the ambit of the prior art.`

I claim:-

l. In a revolving door, a center post, a plurality of wings pivotallycarried by the center post, a center pin carried by the lowerl end ofthe post and having a bearing revolubly supporting the weight 12g licorsocket, a weight-supporting bearing on said g pin, and a longitudinallyextensible member to transmit theweight of the door to said center pin.

3. In a revolving door, a center post formed with an internal chamberopen at its lower end, a

bearing slidably mounted in said chamber, a cenf ter pin carried by saidbearing for nonrotatable engagement with a iloor socket, a connectionfor transmitting the weight of the door to said hearing and for slidingthe bearing within the chamber to withdraw the center pin from the floorsocket, and a centering pin carried by the upper end of said centerpost.

JOI-IN W. LIGHT.

